| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 12/20/2005 | CA2189132C A highwall mining system with mining and removal of coal (or ore) |
| 11/09/2005 | EP1131535B1 Method and system for accessing subterranean deposits from the surface |
| 11/09/2005 | CN1693664A Preparation method of shelf type fast greening installation on rock |
| 11/09/2005 | CN1693663A Upward spacing admission passage filling mining method |
| 11/09/2005 | CN1693662A Improved sublevel caving method without bottom column |
| 11/03/2005 | US20050242654 Continuous extraction of underground narrow-vein metal-bearing deposits by thermal rock fragmentation |
| 10/27/2005 | DE10393535T5 Bergbausystem Mining system |
| 10/26/2005 | CN1687563A Energy saving method for rock drilling and tunneling driven by potential energy of water from deep well mining |
| 10/11/2005 | US6953307 Apparatus for assembling a liner |
| 10/06/2005 | US20050218711 Method and means for recovering hydrocarbons from oil sands by underground mining |
| 10/05/2005 | CN1676877A Adjacent coal face alternating layout coal-mining method |
| 10/05/2005 | CN1221727C Continuous miner house column type short arm mechanized coal mining process |
| 10/04/2005 | US6951247 In situ thermal processing of an oil shale formation using horizontal heat sources |
| 09/07/2005 | CN1664310A Control method for coal mine detached island coal pillar rock burst |
| 08/24/2005 | CN1657745A Coal-minin method of high-dipping thick seam |
| 08/18/2005 | US20050179307 Apparatus for assembling a liner |
| 08/16/2005 | US6929330 Method and system for mining hydrocarbon-containing materials |
| 08/16/2005 | US6929067 Heat sources with conductive material for in situ thermal processing of an oil shale formation |
| 08/10/2005 | CN1651715A Method of entering target geologic body and system |
| 08/02/2005 | US6923257 pyrolysis of oils in well bores to form synthesis gas |
| 08/02/2005 | CA2447254C Well cavity positioning method |
| 07/20/2005 | EP1458953B1 Apparatus and process for mining of minerals |
| 07/19/2005 | US6918443 In situ conversion of hydrocarbons to produce hydrocarbons, hydrogen, and/or novel product streams from underground oil shale formations |
| 07/19/2005 | US6918442 In situ conversion of hydrocarbons to produce hydrocarbons, hydrogen, and/or novel product streams from underground oil shale formations |
| 07/12/2005 | US6916071 Mining system |
| 07/12/2005 | US6915850 In situ thermal processing of an oil shale formation having permeable and impermeable sections |
| 07/09/2005 | CA2451952A1 Imparting stability to coal while drilling coal-bed methane |
| 07/06/2005 | CN1635265A Ore drawing process during structural parameter transition of sublevel caving method without sill pillar |
| 07/06/2005 | CN1635264A Large span blast hole groove broaching process |
| 07/05/2005 | US6913321 Mining system |
| 06/29/2005 | CN1632285A Unmanned down-hole coal excavating method for vertical shaft group |
| 06/28/2005 | CA2441667C Method and system for accessing subterranean deposits from the surface |
| 06/23/2005 | US20050134102 Mine site oil sands processing |
| 06/23/2005 | DE19618404B4 Verfahren zur Querschnittserfassung in untertägigen Grubenbauen und Vorrichtung zur Durchführung des Verfahrens A method of detecting cross-section in underground workings and apparatus for carrying out the method |
| 06/15/2005 | CN1206443C Coal cutting method for inclined thick and very thick coal bed |
| 06/09/2005 | CA2545358A1 Method for multiple blasting |
| 06/01/2005 | CN1204331C Mining machine and mining method |
| 05/19/2005 | WO2003050391A8 Mining method for steeply dipping ore bodies |
| 05/05/2005 | US20050093361 Method and means for processing oil sands while excavating |
| 04/27/2005 | CN1199002C Coal mining method adopting 3.55m monocolumn three-two row pipe burying top board |
| 04/20/2005 | CN1607316A Top-coal caving method with horizontal sectional light-support in steep and close seams |
| 04/20/2005 | CN1198046C Working face J-type ventilating system |
| 04/19/2005 | US6880633 In situ thermal processing of an oil shale formation to produce a desired product |
| 04/12/2005 | US6877555 In situ thermal processing of an oil shale formation while inhibiting coking |
| 04/05/2005 | CA2167182C Highwall mining system |
| 04/05/2005 | CA2167181C Highwall mining system |
| 03/30/2005 | EP1056927A4 Surface-assisted continuous underground mining |
| 03/30/2005 | CN1601054A Method for intensified mining deep-dished strip mine |
| 03/30/2005 | CN1195150C Plant-securing technique for vegetation recovery for stone pit slope |
| 03/30/2005 | CN1195149C Roof bolt protection and sectioned empty field method for phosphorate rock mining |
| 03/23/2005 | CN1598857A Method for optimizing slope of open-pit mine |
| 03/22/2005 | US6869147 Method and system for mining hydrocarbon-containing materials |
| 03/22/2005 | CA2321064C Surface-assisted continuous underground mining |
| 03/09/2005 | CN1192156C Plant growing soil |
| 02/22/2005 | US6857706 Mining method for steeply dipping ore bodies |
| 02/22/2005 | US6857705 Mining machine and method |
| 02/16/2005 | CN1580489A Hydraulic coal extraction |
| 02/16/2005 | CN1189642C Method for exploiting soluble salt mine through dissolution method of single well |
| 02/16/2005 | CN1189641C Hydraulic coal mining method without underground drilling and special device |
| 02/15/2005 | US6854537 Portable placer exploration and sampling apparatus |
| 02/08/2005 | US6851757 Mining method |
| 02/08/2005 | CA2441672C Method and system for accessing subterranean deposits from the surface |
| 02/08/2005 | CA2441671C Method and system for accessing subterranean deposits from the surface |
| 02/01/2005 | US6848748 Mining system with drilling, loading, conveyor, and support |
| 01/26/2005 | CN1186520C Method for constructing artificial pillars made of binded two materials |
| 01/26/2005 | CN1186519C Filled mining method |
| 01/20/2005 | US20050012499 Blast movement monitor and method for determining the movement of a blast movement monitor and associated rock as a result of blasting operations |
| 01/19/2005 | CN1185402C Full section mining method using scraper |
| 01/13/2005 | US20050010385 Blasting method |
| 12/30/2004 | US20040262980 Method and means for recovering hydrocarbons from oil sands by underground mining |
| 12/29/2004 | CN1558090A Three step type stope technique for thick coal seam overall height mining |
| 12/22/2004 | CN1556306A Open air mine semicontinuous conveying system single line slope conveying designing method |
| 12/16/2004 | US20040251731 Apparatus and process for mining of minerals |
| 12/14/2004 | US6832165 Method of roof instability rating |
| 12/08/2004 | CN1179115C Fast afforestation method for vertical surface of stone pit |
| 12/04/2004 | CA2735355A1 Method and means for recovering hydrocarbons from oil sands by underground mining |
| 12/04/2004 | CA2469247A1 A method and means for recovering hydrocarbons from oil sands by underground mining |
| 11/30/2004 | US6824224 Coalbed methane extraction process |
| 11/24/2004 | CN1548702A Mining method for inclined medium-thick bedded or thick-bedded orebody continuous stoping |
| 11/17/2004 | CN1546839A Ladder type mining method using united pillars to support roof and partition stope |
| 11/16/2004 | US6817678 Auger mining system |
| 11/11/2004 | WO2003050391A3 Mining method for steeply dipping ore bodies |
| 11/03/2004 | CN1542257A Multiple upper protective-seam gas burst-preventing exploitation method used in the exploitation of coal seams |
| 10/28/2004 | US20040211557 Conductor-in-conduit heat sources for in situ thermal processing of an oil shale formation |
| 10/28/2004 | US20040211554 Heat sources with conductive material for in situ thermal processing of an oil shale formation |
| 10/21/2004 | US20040207247 Automated excavation machine |
| 09/28/2004 | US6796616 Mining system |
| 09/22/2004 | EP1458953A1 Apparatus and process for mining of minerals |
| 09/09/2004 | US20040174064 Mining system |
| 09/01/2004 | CN1525042A Method of simplified advance wall type coal mining, gas collection and drainage |
| 08/18/2004 | CN1520708A Naked rock fast afforestation method |
| 08/03/2004 | US6772105 Blasting method |
| 07/22/2004 | DE10300387A1 Method for coal seam working with additional one ended short coal faces to cut otherwise unused coal from the outer edges of the main face |
| 07/14/2004 | CN1157528C 漏斗式采煤法 Funnel mining method |
| 07/08/2004 | DE19632154C5 Haldenabdeckung und Verfahren zur Herstellung derselben Heap cover and method of manufacturing the same |
| 06/30/2004 | CN1508391A Long-span prop-free sectional caving stoping method |
| 06/24/2004 | WO2004053293A1 Mining system |
| 06/17/2004 | US20040113482 Portable placer exploration and sampling apparatus |
| 06/17/2004 | DE202004002159U1 Arrangement for raising the pH value in open acid bodies of water, e.g. in mining, comprises a tanker, receiving sinks, floating mobile storage units, pump and/or ventilator, a separate drive, and a distribution system |
| 06/02/2004 | CA2574989A1 Method and system for extraction of resources from a subterranean well bore |